From 2ec3829bd45c47f7382d2e3e5739f5c9df9cba76 Mon Sep 17 00:00:00 2001
From: Richard Cochran <richardcochran@gmail.com>
Date: Fri, 5 Apr 2013 14:32:24 +0200
Subject: [PATCH] Apply utc offset correction even when free running.

When using software time stamping and a free running clock, the
statistics appear to be off by the TAI offset. This patch fixes the
issue by setting the internal UTC timescale flag in such cases.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
---
 clock.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/clock.c b/clock.c
index bd22de5..1ba30ee 100644
--- a/clock.c
+++ b/clock.c
@@ -574,6 +574,9 @@ struct clock *clock_create(int phc_index, struct interface *iface, int count,
 
 	if (c->free_running) {
 		c->clkid = CLOCK_INVALID;
+		if (timestamping == TS_SOFTWARE || timestamping == TS_LEGACY_HW) {
+			c->utc_timescale = 1;
+		}
 	} else if (phc_index >= 0) {
 		snprintf(phc, 31, "/dev/ptp%d", phc_index);
 		c->clkid = phc_open(phc);